Multiply by 2-digit numbers: word problems

Learning Objectives Identify keywords in word problems that indicate multiplication. Translate real-world scenarios into multiplication expressions involving 2-digit numbers. Apply the standard algorithm to multiply a multi-digit number by a 2-digit number. Solve multi-step word problems requiring multiplication by a 2-digit number. Estimate products to check the reasonableness of answers in word problems. Clearly explain the steps taken to solve a 2-digit multiplication word problem. Ever wonder how many cookies you'd need for a huge party if each guest eats a certain number? 🍪 Let's find out how multiplication helps us solve these real-life puzzles! In this lesson, you'll learn how to tackle word problems that require multiplying by 2-digit numbers. We&#03...

TermDefinitionExample MultiplicationA mathematical operation that represents repeated addition of the same number. It's used to find the total number of items in equal groups.If you have 3 bags with 5 apples each, multiplication ($3 \times 5$) tells you there are 15 apples in total. FactorsThe numbers that are multiplied together to get a product.In the problem $15 \times 23 = 345$, the numbers 15 and 23 are the factors. ProductThe result or answer obtained from a multiplication operation.In the problem $15 \times 23 = 345$, the number 345 is the product. Word ProblemA mathematical problem presented in a narrative or descriptive form, requiring you to read and understand the situation before solving.A store sells 12 boxes of pencils, with 24 pencils in each box. How many pencils are...

Word Problem Solving Strategy Understand, Plan, Solve, Check A systematic approach to solving any word problem: 1. **Understand:** Read the problem carefully. What information is given? What is the question asking? 2. **Plan:** Decide which operation(s) to use (in this case, multiplication). How will you solve it? 3. **Solve:** Perform the calculations accurately. 4. **Check:** Review your answer. Does it make sense? Is it reasonable? You can use estimation to help check. Standard Multiplication Algorithm (2-Digit by Multi-Digit) $ \text{1. Multiply the top number by the ones digit of the bottom number, regrouping if necessary.} \\ \text{2. Write a zero as a placeholder in the ones column below your first partial product.} \\ \text{3. Multiply the top number by the tens di...